Fix implicit signedness change warnings in private includes

Both SkColorData.h and SkNx_sse.h are in include/private, but not
(currently) included by any public headers. Adding them to a public
header reveals warnings about implicit conversion changing signedness
(-Wsign-conversion), enforced in our public headers warnings check.

Bug: skia:11995
Change-Id: Iee44b24a6df031431113e2d25e42f0a8dd55a5c0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/408056
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
2 files changed